Only resize the menu on hide if it was resized on show

Fixes an issue where a max-size PIP is resized to the
user-resized size after either:
A) single-tap to show the menu and then it times out to hide
it, or
B) single-tap to show the menu and then single tap outside of
the PIP window
This was caused by the resize=true flag being passed into
PipMenuView.hideMenu() from the hide menu timeout runnable or
from PipResizeGestureHandler.onDragCornerResize()

Bug: 186616706
Test: enter PIP, then:
1) double-tap to MAX, then tap once to show menu and wait for
it to time out - verify it stays in MAX size
2) double-tap to MAX, then tap once to show menu and once
outside of PIP - verify it stays in MAX size
3) pinch-resize to minimum size, tap once, wait for it to
expand a bit, wait for the menu timeout - verify it resizes
down to the minimum size.

Change-Id: I394d49b77f2c6aa42fc4681ef5238c478a474b85